[NEWS] Novell NetMail NMAP Agent "USER" Buffer Overflow

From: SecuriTeam (support_at_securiteam.com)
Date: 10/20/05

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Date: 20 Oct 2005 19:06:11 +0200

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      Novell NetMail NMAP Agent "USER" Buffer Overflow
    ------------------------------------------------------------------------

    SUMMARY

    " <http://www.novell.com/products/netmail/> Novell NetMail is an e-mail
    and calendaring system that is based on Internet-standard messaging and
    security protocols."

    Lack of proper length checking allow attackers to execute arbitrary code
    by overflowing an internal buffer used by the Novell NetMail.

    DETAILS

    Vulnerable Systems:
     * Novell NetMail version 3.52C

    Immune Systems:
     * Novell NetMail version 3.52D

    The vulnerability is caused due to a boundary error in the NMAP (Network
    Messaging Application Protocol) Agent when handling an overly long user
    name in the "USER" command. This can be exploited to cause a stack-based
    buffer overflow and allows arbitrary code execution.

    Successful exploitation requires valid logon to the NMAP Agent (e.g. if
    the default NMAP authentication credential has not been changed).

    Vendor Status:
    The vendor has issued an update:
    NetWare:
    <http://support.novell.com/servlet/filedownload/pub/netmail352d_nw.zip>
    http://support.novell.com/servlet/filedownload/pub/netmail352d_nw.zip
    Windows:
    <http://support.novell.com/servlet/filedownload/pub/netmail352d_win.zip>
    http://support.novell.com/servlet/filedownload/pub/netmail352d_win.zip
    Linux:
    <http://support.novell.com/servle...load/sec/pub/netmail352d_lin.tgz>
    http://support.novell.com/servle...load/sec/pub/netmail352d_lin.tgz

    CVE Information:
     <http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2469>
    CAN-2005-2469

    Disclosure Timeline:
    18/07/2005 - Initial vendor notification
    18/07/2005 - Initial vendor reply
    10/10/2005 - Vendor released fixed version
    12/10/2005 - Public disclosure

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:vuln@secunia.com> Secunia
    Research.
    The original article can be found at:
    <http://secunia.com/advisories/15925/>
    http://secunia.com/advisories/15925/

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